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how to find range/ domain C3 PLEASE HELP watch

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    I am soo stuck. I always learn it but forget it. Can somebody please help me.

    I know range is the output, and domain the input.

    Is there any 'cheat' I can do?
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    do you mean a way of remembering what the 2 are?

    d comes before r in the alphabet? so domain is the numbers you put in, and range is what you get out??
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    (Original post by Heeere's Johnny!)
    do you mean a way of remembering what the 2 are?

    d comes before r in the alphabet? so domain is the numbers you put in, and range is what you get out??
    Sorry I meant how to apply that to a question I.e

    F(x)= 1/x+1 where x>3

    Find range?:confused:
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    (Original post by games211)
    Sorry I meant how to apply that to a question I.e

    F(x)= 1/x+1 where x>3

    Find range?:confused:
    Just substitute x=3 in which would be f(x)=1/4. Therefore the range of f(x) is <1/4.
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    (Original post by Mathsz0r)
    Just substitute x=3 in which would be f(x)=1/4. Therefore the range of f(x) is <1/4.
    but why is the sign <1/4
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    (Original post by games211)
    but why is the sign <1/4
    If the x values are x>3, 1/1+x is going to be a decreasing value. Try it - substitute in x=4,x=5 etc. It'll eventually converge to 0 for x tending towards infinity.
 
 
 
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